18971048 has 16 divisors (see below), whose sum is σ = 37663380. Its totient is φ = 8927488.

The previous prime is 18971023. The next prime is 18971053. The reversal of 18971048 is 84017981.

It can be written as a sum of positive squares in 2 ways, for example, as 18164644 + 806404 = 4262^2 + 898^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69611 + ... + 69882.

Almost surely, 2^18971048 is an apocalyptic number.

It is an amenable number.

18971048 is a deficient number, since it is larger than the sum of its proper divisors (18692332).

18971048 is a wasteful number, since it uses less digits than its factorization.

18971048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139516 (or 139512 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 38.

The square root of 18971048 is about 4355.5766552777. The cubic root of 18971048 is about 266.7045598929.

The spelling of 18971048 in words is "eighteen million, nine hundred seventy-one thousand, forty-eight".